Thanks for these updates!
For people still on /e/OS S (A12), this is already causing some issues that seem to be related to versions of microG that are too old.
I there a way to update microG in the meantime and somewhere we can track progress for the upgrade towards /e/OS T for devices whose manufacturers have already provided A13 releases?
(Another Teracube 2e user waiting for the update to A13 
)